Professional Series rider mower engines Single cylinder and V-twin engines offer the best of both worlds: world-class endurance and power Overhead Valve (OHV) Engine Design OHV engines run cooler and cleaner for better fuel economy and longer engine life Tool-less Air Cleaner Cover Easy access for filter changes Advanced Debris Management System Keeps the engine clean by deflecting and ejecting grass and debris for a longer engine life Full Pressure Lube System Cooler operation and longer life Dura-Bore Cast Iron Sleeve Withstands wear and abuse
